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Author: Subject: Diff/Shafts etc - Drum vs Disc
RichieC

posted on 31/10/05 at 10:08 AM Reply With Quote
Diff/Shafts etc - Drum vs Disc

Morning all,

Stumbled across a cheap XR4 rear end with diff, shafts and discs/calipers.

Is there much advantage or hassle by gong for this route?

I was happy with drums but this way I benefit from an LSD into the bargain.

Alternatively, can you fit drums to the bolt on shafts which come with the LSD?

Cheers

Rich

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G.Man

posted on 31/10/05 at 10:19 AM Reply With Quote
I believe the hubs are different for drums and disks and are interchangeable...

Is it an XR4x4 or XR4? only the 4x4 has an LSD







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RichieC

posted on 31/10/05 at 10:22 AM Reply With Quote
Cheers

Its a 4x4. Ill keep me beadies open but I think this is probably the best bet.

Thanks again

Rich

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G.Man

posted on 31/10/05 at 10:36 AM Reply With Quote
Yeah go for it, has all the bits you need



Disks look far better behind alloys







Opinions are like backsides..
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smart51

posted on 31/10/05 at 10:42 AM Reply With Quote
I have an XR4x4 rear end. No problems. The hubs are the same on discs or drums. MNR do rear uprights to suit. Sierras with ABS have teeth cast into the rear hub. These foul the upright and have to be turned off (for turned read angle grinder or file if no lathe available).

There's nothing wrong with rear discs and a recent thread here suggests that the weight penalty is only about a kilo if I remember correctly.

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RichieC

posted on 31/10/05 at 10:44 AM Reply With Quote
Ok thats good news.

I always thought they look better too, but wasnt sure if they were compatible.

Thanks

Rich

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marc n

posted on 31/10/05 at 03:44 PM Reply With Quote
we can convert drums to discs but not the otherway round

best regards


marc

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amalyos

posted on 31/10/05 at 04:40 PM Reply With Quote
quote:
Originally posted by smart51
Sierras with ABS have teeth cast into the rear hub. These foul the upright and have to be turned off (for turned read angle grinder or file if no lathe available).


I've got the ABS 4x4 rear end, how much has to be take off to clear the hubs?

Steve

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RichieC

posted on 31/10/05 at 06:26 PM Reply With Quote
Bit of bad news, the XR4x4 (with leather interior, Konis etc) I was going to buy (for £250) has 4 knackered calipers which the guy says are not worth rebuilding

The MOT/Tax are up so that leaves the problem of moving it the 80 miles.
Considering it was mostly the back end I was wanting, thats a shame.

Is there much else that can be taken from a 4x4? I appreciate the front uprights are different but I assume the column etc is fine.

Did seem a bit too good to be true

Cheers

Rich

[Edited on 31/10/05 by RichieC]

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mnr laptop

posted on 31/10/05 at 08:01 PM Reply With Quote
hi ritchie

the rack link is likely to be the wrong one as it will be power steering one which is cast, the column will be ok.

re the abs rings anyone who is building our cars we do this for you and will turn them down in the laith, it can of course be done by a grinder but not as neat

best regards

marc

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billy

posted on 31/10/05 at 08:15 PM Reply With Quote
Just a quick thought, if you put drums on the back just wait till you stand back and admire your car.........then you see those drums on display thro your nice shiny wheels and you think my god they have got to go





luego-lo-cost finished,vauxhall 16v 2.0,twin 45s de-dion rear set up

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RichieC

posted on 31/10/05 at 08:20 PM Reply With Quote
Cheers marc et al

Im not going to bother with this one I dont think. 160 mile round trip and a load of grief if these calipers are indeed knackered (it failed the MOT on those alone)

Im sure another one will come along but as Im in no rush I will hang out for the right one.

XR4x4 back end I think, bog standard everything else.
Rgds

Rich

[Edited on 31/10/05 by RichieC]

[Edited on 31/10/05 by RichieC]

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JoelP

posted on 31/10/05 at 08:21 PM Reply With Quote
quote:
Originally posted by RichieC
Bit of bad news, the XR4x4 (with leather interior, Konis etc) I was going to buy (for £250) has 4 knackered calipers which the guy says are not worth rebuilding

The MOT/Tax are up so that leaves the problem of moving it the 80 miles.
Considering it was mostly the back end I was wanting, thats a shame.

Is there much else that can be taken from a 4x4? I appreciate the front uprights are different but I assume the column etc is fine.

Did seem a bit too good to be true

Cheers

Rich

[Edited on 31/10/05 by RichieC]


If its scrap, pay no more than £100. There isnt much of value on it - i sold loads of columns, switches, handbrakes, gearlevers etc for fivers and tenners. Add in the time to break it, and its not such a good prospect. Leather makes it a bit better, but still bleak.






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RichieC

posted on 31/10/05 at 08:25 PM Reply With Quote
Yeh quite agree, its becoming less worth it.

Cheers

Rich

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mnr laptop

posted on 31/10/05 at 08:28 PM Reply With Quote
quote:

Just a quick thought, if you put drums on the back just wait till you stand back and admire your car.........then you see those drums on display thro your nice shiny wheels and you think my god they have got to go



we do some plates that adapt the drums to disc brakes, as using the drum brake shafts saves some weight

best regards

marc

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RichieC

posted on 31/10/05 at 08:49 PM Reply With Quote
I see. So in terms of weight saving, for a rear brake setup youre better off with brake shafts and then adapting them.

I just need to work out which shafts (bolt/slip in) go with which brakes/diff combo........and there was me thinking there werent many differences between Sierra models



What are your thoughts on 240 vs 260mm and Solid vs Plain for the fronts? I assume both types of caliper accept both sizes and i want the brakes to be as good as they possibly can, but there seems to be a trade off with weight vs stopping power which i doubt needs to be that hairy on such a light car.

Rgds

Rich

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marc n

posted on 2/11/05 at 09:26 AM Reply With Quote
hi rich

even with 240s on the brakes are pretty good ( and they are cheaper for the pads recon calipers etc )

best regards

marc

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RichieC

posted on 2/11/05 at 01:23 PM Reply With Quote
Great cheers, Ill just see what comes along.

Was I right in thinking that both sizes & the vented and solid fit the calipers?

Rgds

Rich

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smart51

posted on 2/11/05 at 01:58 PM Reply With Quote
The vented discs are much wider than the solid (they are like 2 discs with a gap between them) you will need different calpipers for solid discs.
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RichieC

posted on 2/11/05 at 02:03 PM Reply With Quote
Of course - what a numptie

Cheers

Rich

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smart51

posted on 2/11/05 at 06:47 PM Reply With Quote
Many people suggest that the solid discs are plenty for a light weight car. Do you really think that you'll need the extra braking force? Is the extra unspring weight a price worth paying? Remember that all up a sierra could weigh nearly 4 times a bike engined vortx and only the high performance versions had the big front discs.
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RichieC

posted on 2/11/05 at 07:16 PM Reply With Quote
Yep, I agree, but if the donor you end up with has vented front discs, its a shame not to use them.
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andy d (rizla)

posted on 2/11/05 at 08:10 PM Reply With Quote
i have vented front and solid rears on my vortx,

ive done a few track days and sprint races and they perform really well

id recomend them

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Bryan Sears

posted on 2/11/05 at 09:21 PM Reply With Quote
So Marc can I use the 3.38 diff that I will have with the shafts that I took out of my donor that had a 3.92 diff both push fit and fit the rear disk brakes and callipers from a 4x4 using the brackets that you make to convert drums to discs.
If anyone can understand this can you advise.

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mnr laptop

posted on 3/11/05 at 09:39 PM Reply With Quote
hi brian thats correct

best regards

marc

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